168 
ECTOPISTIN^. 
ruptly naiTOwed towards the tip, as in genus Ptili- 
nopus, and as it also exists in several members of 
the ground doves or Partridge Pigeons. The Co- 
lumba Capensis of authors, and Columba Macquarrie 
of Lesson, also appear to possess characters which 
in all probability will separate them from the fore- 
going groups, and it is by these and some other 
nearly allied forms, that a passage to the next divi- 
sion or Ground Doves is effected. 
